Parallel capacitor detection method

A Novel Capacitive Detection Scheme With Inherent Self

Abstract: This paper reports a novel capacitive detection method, called the sideband-ratio (SBR) detection, which is robust to variations of such critical parameters as the nominal capacitance, frequency, and amplitude of the probing voltage and gain of the transimpedance amplifier.

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Parallel capacitor online circuit parameter detection method

The invention discloses a parallel capacitor online circuit parameter detection method, including the following steps: 1) extracting transmission parameters of a standby voltage transformer and current transformer at 50Hz to 10kHz, and recording as a voltage compensation factor P1 and a current compensation factor Q1 respectively; 2) using the

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Arc Fault Detection and Localization in Photovoltaic Systems

Arc Fault Detection and Localization in Photovoltaic Systems Using Parallel Capacitors Qing Xiong1,2, Xianyong Feng2, Angelo L. Gattozzi2, Xiaojun Liu 1, Hang Yang, Shengchang Ji1, Lingyu Zhu1

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Electrostatic Measurements of Low Capacitance Changes in a

This paper describes an electrostatic experimental setup to measure the capacitance change when an uncharged object of arbitrary shape is inserted into a parallel plate capacitor.

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A Novel Capacitive Detection Scheme With Inherent Self-Calibration

Based on these results, in this paper we report a novel capacitive detection method with inherent self-calibration. We first describe a general electro-mechanical model of a resonator with parallel plate capacitive detection in Sec-tion 2. The parallel plate EAM pick-up signal is studied in Sec

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Parallel capacitor online circuit parameter detection method

The invention discloses a parallel capacitor online circuit parameter detection method, including the following steps: 1) extracting transmission parameters of a standby voltage transformer

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Capacitors in Parallel

One important point to remember about parallel connected capacitor circuits, the total capacitance ( C T ) of any two or more capacitors connected together in parallel will always be GREATER than the value of the largest capacitor in the group as we are adding together values. So in our simple example above, C T = 0.6μF whereas the largest value capacitor in

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Design and Experiment of Capacitive Rice Online Moisture Detection

In this system, capacitor detection used a parallel capacitor structure with three plates. The plate material was copper foil, which offers excellent conductivity, good surface smoothness, good ductility, and a low price. According to the results in the optimization experiment for the structural parameters of the tri-plate capacitor, the length, width, and

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Improving sensitivity of an inductive pulse sensor for detection

Results showed that the parallel LC resonance method is capable of detecting a 20 µm iron particle and a 55 µm copper particle while detection limits for the non-resonance method are 45 and 125

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portable and low-cost parallel-plate capacitor sensor for alkali

This study aims to design a sensor based on parallel-plate capacitors that can detect certain elements such as alkali and heavy metals ions, identifying variations of concentration, as well as finding the frequency characteristics of these ele-ments. The samples used in this study are several types of

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Arc Fault Detection and Localization in Photovoltaic Systems Using

A detection method for series dc arc faults in a PV system based on time and frequency characteristics of a parallel capacitor current is proposed. Series and

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Capacitive Sensing

Ways to detect with a capacitive sensor (non-fringing sensor): 1) Change the dielectric material, i.e. change ε r → this can be difficult to do. 2) Change the electrode separation distance → easy to do.

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portable and low-cost parallel-plate capacitor sensor for alkali and

This study aims to design a sensor based on parallel-plate capacitors that can detect certain elements such as alkali and heavy metals ions, identifying variations of concentration, as well

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Parallel plate capacitor | Download Scientific Diagram

Download scientific diagram | Parallel plate capacitor from publication: Advanced Interfacing Techniques for the Capacitive Sensors | Today, capacitive sensors are playing an important role in the

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An Online Adaptive Internal Short Circuit Detection Method

Internal short circuit (ISC) is a critical cause for the dangerous thermal runaway of lithium-ion battery (LIB); thus, the accurate early-stage detection of the ISC failure is critical to improving the safety of electric vehicles. In this paper, a model-based and self-diagnostic method for online ISC detection of LIB is proposed using the measured load current and terminal

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A feasibility and method research on the on-line monitoring of parallel

Based on the current monitoring, the running status of the capacitor could be diagnosed. The paper analyzes the feasibility of this method, and designs a system for the on-line monitoring of the parallel compensation capacitor capacitance, combined with highpotential power supply and wireless acquisition and transmission technology. Finally

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Capacitive Sensing

Ways to detect with a capacitive sensor (non-fringing sensor): 1) Change the dielectric material, i.e. change ε r → this can be difficult to do. 2) Change the electrode separation distance →

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Online monitoring method for submodule capacitors in modular

To identify abnormal capacitors, a condition monitoring method for capacitors is proposed in this paper using the cumulative sum detection of the sliding window algorithm. First, the bilateral cumulative sum algorithm of the sliding window is proposed to extract the switch-on time and switch-off time of the submodules (SMs). Second, the

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A Simple Procedure to Detect Failed Capacitor Within a Parallel

This paper provides a practical method for detecting the failed one ceramic capacitor within a parallel mount on PCB and gives a simple way to save time when it needs to replace the bad component. For achieving this goal is using piezoelectric effect encountered in such devices and thermal methods of screening.

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Online monitoring method for submodule capacitors in modular

To identify abnormal capacitors, a condition monitoring method for capacitors is proposed in this paper using the cumulative sum detection of the sliding window algorithm.

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Design and Experiment of Capacitive Rice Online Moisture Detection

To solve the problems of poor stability and low monitoring precision in the online detection of rice moisture in the drying tower, we designed an online detection device for rice moisture at the outlet of the drying tower. The structure of a tri-plate capacitor was adopted, and the electrostatic field of the tri-plate capacitor was simulated using COMSOL software. A

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A Novel Capacitive Detection Scheme With Inherent Self-Calibration

Abstract: This paper reports a novel capacitive detection method, called the sideband-ratio (SBR) detection, which is robust to variations of such critical parameters as the

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Improving sensitivity of an inductive pulse sensor for detection of

Results showed that the parallel LC resonance method is capable of detecting a 20 µm iron particle and a 55 µm copper particle while detection limits for the non-resonance method are 45 and 125 µm, respectively. In contrast to the non-resonant method, the sensitivity of the resonance method has been significantly improved.

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A Simple Procedure to Detect Failed Capacitor Within a Parallel

This paper provides a practical method for detecting the failed one ceramic capacitor within a parallel mount on PCB and gives a simple way to save time when it needs to replace the bad

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Arc Fault Detection and Localization in Photovoltaic Systems

Current waveforms of parallel capacitors when two series arcs occur in the PV system. to extract high-frequency components, which are illustrated in Figs. 9 and 10, respectively. The waveforms of the capacitor currents show that there are two arcs generated in the system. The first arc occurred at about −0.002 s, was maintained for about 0.002 s, and then extinguished at 0 s.

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A feasibility and method research on the on-line monitoring of

Based on the current monitoring, the running status of the capacitor could be diagnosed. The paper analyzes the feasibility of this method, and designs a system for the on-line monitoring

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Electrostatic Measurements of Low Capacitance Changes in a Parallel

This paper describes an electrostatic experimental setup to measure the capacitance change when an uncharged object of arbitrary shape is inserted into a parallel plate capacitor.

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Detecting and localizing series arc fault in

A detection method for series dc arc faults in a PV system based on time and frequency characteristics of a parallel capacitor current is proposed. Series and parallel solar

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A Novel Capacitive Detection Scheme With Inherent Self

Based on these results, in this paper we report a novel capacitive detection method with inherent self-calibration. We first describe a general electro-mechanical model of a resonator with parallel plate capacitive detection in Sec-tion 2. The parallel

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